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avfilter/vf_showinfo: check if the s12m data size is valid 

Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Limin Wang 2020-03-25 18:45:47 +08:00 committed by Michael Niedermayer
parent 9f1d2f47db
commit aa822007a4
1 changed files with 4 additions and 0 deletions
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4
libavfilter/vf_showinfo.c
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@ -318,6 +318,10 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
break;
case AV_FRAME_DATA_S12M_TIMECODE: {
uint32_t *tc = (uint32_t*)sd->data;
if (sd->size != 16) {
av_log(ctx, AV_LOG_ERROR, "invalid data");
break;
}
for (int j = 1; j <= tc[0]; j++) {
char tcbuf[AV_TIMECODE_STR_SIZE];
av_timecode_make_smpte_tc_string(tcbuf, tc[j], 0);